Switched to per track mode set the track’s length to 5, 10, 15 for a 5 step meter (with varying degrees of complexity). M.len should be set to infinite so that the polymeter keeps going and isn’t reset. Change length can be any number of steps that you want the sequence to take to switch to a next pattern. Generally I just keep it simple and use 16 or 64. But i mostly work with 1 pattern per groove.
If your track uses multiple patterns and you want the polyneter not to be broken, simply multiply the meter until it lines up with a 4 bar sequence. So for a 5 step this could be 40 steps for example.