Need loop in Targets

I want to make Mosaics, for example with 4 mosaics.
I never know when clouds are coming.
I want to build the mosaic with as much as possible subs but if I spend to much time on mosaic 1 and 2 then the quality is not equal on 3 and 4 mosaic.
So I think a loop just like the loop on tevents with multiple targets is needed.
Or, copy the targets many times.
(one day later):
I did copy the targets 12 times but during imaging I need to make a adjustment, so all targets must be changed to.
I forgot by one target to remove the rotation vink and the sequence stopped,
Pls advice.
Regards Hugo.