Yes, you can do that, but you need to place the tip/bet separately for each strategy you want it to be included.

Example: If Tipster places 10€ tip in his Strategy #1 and wants the same tip to feature also in his Strategy #2, then he needs to make the same tip again with same or different stake and choose it to be included for Strategy #2

It is not recommended that Tipster have different strategies all with identical tips, but ocassional usage of the same tip for one or more strategies is not forbidden.