You can add the relevant objects representing the servers to this rule.
However, if your goal is "temporary" access, then you should create a new rule and use the Time field to restrict the access to whatever end date is appropriate.
Note that Time Objects in releases prior to R80.x have a performance impact (no SecureXL templates), so this rule will probably need to be near the bottom of the rulebase to minimize the performance impact.
Note that "All_Internet" and "Any" are effectively the same thing in this context.
Note that once the specified time has elapsed, the rule will still be present in the rulebase but won't be active.
You will have to manually remove it from the rulebase afterwords.
Or you can modify the existing rule to include outbound access without the performance impact, and remove it from the rule later.
Either approach will work.