After struggling with this for a while myself I think I found a consistent and easy way to assign multiple blocks to a footswitch and easily bypass the ones I want bypassed when the footswitch is off with predictable results. This may seem obvious but the previous method I was using always seemed to leave me having to save and go back and play with the bypass states again to get the blocks I wanted coming on and off with the footswitch ring reflecting their state properly. PROCEDURE FOR ASSIGNING MULTIPLE BLOCKS TO A FOOTSWITCH
Click the "MODE" footswitch to enter pedal view if you are not already there.
Use the joystick to navigate to the block you want to assign to a footswitch.
Now touch and hold the footswitch you want to assign to your block to. Do not click or tap the footswitch, just touch it gently and hold it like your favorite toy.
After you hold it for a second the "Footswitch Assign" screen will pop up. Hit "OK" to assign the footswitch.
Now use the joystick to navigate to the next block you want to assign and repeat step #3. Again, as long as you hold (keep your finger down without lifting) the footswitch rather than tapping it, the new block you are attempting to assign to the footswitch will stay selected and the "Footswitch Assign" screen will pop up. Now repeat step #4. You can repeat steps #2, #3, & #4 for up to 8 block assignments (at least as of this post).
Finally, after all your chosen blocks are assigned. You can tap (touch and quickly lift off, don't click) the footswitch you have assigned everything to. Notice this time you are tapping, not touching and holding. Each time you tap the footswitch it will move to the next block that you have in your multiple assignment. Push bypass (or not) for each block assigned depending on whether you want if on or off when the footswitch is engaged. Once you have done this you will notice that you can tap your way through the blocks and the footswitch will light up or go dim according to each block's bypass state.
Last but not least, if you want your preset to come up with your multiple assigned footswitch on, make sure that before you save it, you select (using the tap method in step #6) one of the blocks that is not bypassed on the multiple assignment. It does not matter which one of the blocks that is not bypassed you select. The opposite of course applies, if you want your preset to come up with the multiple footswitch dimmed and not selected, make sure you select any one of the blocks that is bypassed.
Now save your preset or all your work is for naught!
Sheesh, with all that tapping and touching and squeezing this post was starting to remind me of an old Journey tune.