Red
is for the peg, Blue is for 5 (just blobbed). Black and Yellow are for 1.
You really want to play yellow, but this could be disastrous if you miss.
You decide to play red and make a good leave for yellow - how?
First of all you don't want to lay up for Yellow near hoop 1 (too dangerous as black is also for hoop 1).
Best to leave one opponent ball at hoop 1 and the other at hoop 2. Does it matter which way round?
Can you leave either Black or Blue at its own hoop? Yes - leave black at 1, blue at 2.