When you see the value in pairing, it’s tempting to pair all the time. Pair programming is intense and tiring - you’ll know when you try it. People will need a breather. You may have very simple coding activities that won’t benefit from the intense code review of pair programming. These are great candidates for solo work that people can sign up for when they need a break from pairing. 

Sometimes people will need to go solo, if only to build their confidence. Birgitta and Nina suggest a solution.