@ozgumusbusra when one is done you unpin it. And pin a new one. The great thing is That you have to limit your self to 3 at the time. If one start to Take alot of time you unpin and divide it maybe. Limits is a superpower! Currently have 20-30 issues That need pinning. Also limiting this pool is imp. You can close issues as not planed. And one is done normal close. Its great!
I like to categorize my tasks as urgent, not urgent, important, not as important on a 2x2 table. I prioritize urgent and important and then urgent not important and goes on like that.