That depends on whether you’re trying to climb hard outside at the moment or not.
If you’re trying to climb hard outside…
1 Day During the Week
Then consider cutting down the workouts to 1 or 2 per week during the weekdays, and then climb hard outside during the weekend. If you’re just going to do one day of climbing during the week, do one fingerboard/campus board workout and warm up by climbing up to 2 grades below your limit. Do this preferably on Tuesday or Wednesday so you have plenty of time to recover for the weekend.
2 Days During the Week
If you’re going to do 2 days during the week, then do 1 fingerboard/campus board workout and one climbing workout on maybe Tuesday and Wednesday, or Tuesday and Thursday during the week. Do the fingerboard/campus board workout on the first training day during the week so you have plenty of time to recover before the weekend.
3 Days During the Week
If you insist on doing all the workouts during the week and want to climb both days on the weekend, then do one workout on Monday, one workout on Wednesday, and the last one on Thursday. That way you at least have 1 day of rest before the weekend. That’s honestly too much climbing for most people, so we’d suggest just climbing on Saturday with this schedule so you have Sunday to rest.
If you’re not trying to climb hard outside…
Then schedule the 3 workouts whenever you can fit them in your schedule while making sure you get enough rest. You want to have at least 1 day of rest on either side of your fingerboard/campus board workout, so that’s really the only defining rule. Maybe do a climbing day on Monday, a fingerboard/campus board day on Thursday, and a climbing day on Saturday. Or something along those lines.