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Good morning @Sol, Welcome to the Zero 88 Forum! @Davidmk and @kgallen have done an excellent explanation of how to go about solving this with a 'master' playback triggering and releasing other singular playbacks. I would have done it the same way. I'll admit, this is something that should be able to be done easier, but this is unfortunately currently the only way to do so. I've written some guidance below, expanding on the discussed elements in this post, to help you along with this. (Apologies for the colossal message, I have tried my best to cut it down). In the following steps, you'll be programming individual playbacks with one lighting state each for each 'step' of your chaser. As Kevin and David have mentioned, we can then trigger and release these individual playbacks with a master playback (not the regular type of Master Playback with the main GO button though, to avoid confusion) that just has control over these individual playbacks. It's worth noting that the 'master' playback you'll program will be a chase, with the individual playbacks (the 'steps' of the chase) will be one state on each playback. E.g. Playback 10 has fixture 1 and 5 at full white, then Playback 11 has fixture 2 and 4 at full white, with 1 and 5 at zero, then finally Playback 12 has fixture 3 at full white, with 1, 5, 2 and 4 at zero. This creates the singular steps for an effect that will chase in towards the middle. By programming these individual steps onto separate playbacks (the last few playbacks available on your desk are recommended to keep them out of the way), it allows us to individually trigger and release them. When releasing a playback, ZerOS completely wipes it out from the outputs, returning to the underlying data for that fixture (if any at all), allowing fixtures to switch back to your original rainbow gradient. For example, if I have Playback 1 as fixture 1 thru 5 at full white, whereas in Playback 2 fixture 3 is at red - I bring up Playback 1 (all white), then I bring up playback 2 (fix. 3 at red) while keeping 1 at the same place. Fixture 3 will turn red. If I bring down Playback 2 (fix. 3 at red) to zero, fixture 3 will return to the original data it has in Playback 1 (white) as Playback 1 is still raised. Steps for creating each individual playback (acting as each step for the overall chase) Step 1: Bring those fixtures up for the first / next step of your chaser you want to program. Step 2: Put them in the colour 'White' so their colour is tagged. This will differentiate the colour from the underlying rainbow playback. Step 3: Tap 'Record' -> Tap an empty playback's flash button. (I recommend the last few playbacks, and ensure to leave room to place them in order so you know which one does what) e.g. 3 steps I would have Playback 46, 47, 48 with 46 being step 1 and 48 being step 3 (last step). After you've programmed each individual playback (e.g. each step) Step 1: Think about where you want to put your 'master' playback that will start your custom chaser. Pick somewhere which has an empty playback to the right of it (explained later*) Step 2: Ensure nothing is being output from the desk again. Tap 'Record' -> Tap that playback's flash button of where you want the 'master' playback to be. Then do the same for the empty playback to the right. This will record an empty cue on each playback. *The way this will work is the left one of the two playbacks will be the playback to start the chaser, and the right of the two will be the flash button to stop / release it (the whole chaser). Step 3 (repeat as many times as needed): Record an empty cue for each individual playback ('step') you have programmed onto the 'master' playback (left of the two). On the second cue recorded, the desk will show a prompt. Tap 'Create Chase'. The second cue has now been recorded, with the playback converted to a chase. This prompt will not appear for future cues/steps recorded to that playback, as it will just add another step to the existing chase. Step 4: Go to the first cue in this playback (VIEW + Playback Flash Button to view these cues) and tap 'Add' in the 'Settings' column for that cue. Step 5: As David mentions, use Macros -> Trigger Cue Stacks (tap 'Add' next to it) -> Select your individual playback for the first step. Tap OK. Tap OK again. Step 6: For cue 2, you should tap 'Add' in the 'Settings' column again, Macros -> Trigger your second individual playback for the second step, but under 'Release Cue Stacks', put in the previous step (for this - the first individual playback). That's the base of it done for the first two cues. You'll now want to repeat that for each individual playback (acting as each step) you have programmed, ensuring that for cues past the first trigger, you release the previous, and trigger the next. Cue 1 should have the first trigger, and releasing the last playback so when the chase repeats, no steps overlay each other. In the single cue in the playback to the right (the one we will use to stop the chaser all-together that I talked about earlier) - do VIEW + Playback Flash Button -> 'Add' in 'Settings' column -> Macros -> Release Cue Stacks -> Add in all of your individual playbacks. This will release all playbacks when you hit the flash button, stopping them. You can also trigger both of these playbacks in your main cue stack, so you don't have to worry about moving the faders. Note that if your 'master' playback for this chaser effect is still raised or active, then it will just re-trigger these individual playbacks, so when stopping using the playback to the right, ensure the 'master' playback is down. You may notice something odd with the fade timings for each step. To fix this, enter each playback's view like you've done previously (using VIEW + Playback Flash Button) and edit the fade times in the columns to whatever you wish. The console will listen to these fade times when triggering and releasing each individual playback. To set up your 'master' playback for a Tap Tempo, hold SETUP and tap your 'master' playback's flash button -> CHASE tab -> Use Global BPM (tap to get it with a red line to indicate it is selected). Then define an empty playback as a Global Tap Tempo by holding SETUP again and tapping a flash button of an empty playback -> Fader Function -> Global Tap Tempo -> OK. Again, I apologise for the very very lengthy message, but I hope this is relatively okay to understand, please do let us know if you need more help as this is quite painful to do, and many thanks again to Kevin and David for the initial replies! Archie

My thanks gents & @Archie, I echo David's appreciation of your comprehensive response. I set Ch1 to Beam as a "Mode" channel on the thumb wheel & it's working as you suggest with values 9-135 controlling intensity but with all colours firing, overriding any colour parameter. Panto opens next week and I don't need a strobe so I'll leave it as I described in the OP for now. If I need a strobe I can come back here to confirm the sub-parameters setup. Many thanks Simon.

@Archie D @Simonkbike Very thorough response as always Archie. If I've missed this in your post I apologise but I'd suggest ch1 should have a default value somewhere between 240 and 255. This is because my reading of the chart suggests this will be needed to make the virtual dimmer work.

Just re-reading my initial post it’s a real dogs dinner! I’m glad @Davidmk and @Archie D have brought some clarity to the exercise with the neat use of a chase on the ‘master’ playback. Great work chaps!

@kgallen No worries. My post offered no more than a hint, you went further and @Archie D has gone right into the detail. I think, between us, we've covered this at every level.