How to minimize asset unavailability time (maintenance time)

We have requirement - minimize asset unavailability time (maintenance time).

For example, if activity_1 occur today , and activity_2 occur tomorrow for the same asset,

we need to schedule activity_2 for today. So, total asset unavailability time  will be only 1 day (today).

What functionality we can use to achive this requirement ?

1) As we understand, supression functionalty can helps a little.

For example, Activity_1 supress Activity_2. It means, that Activity_1 include Activity_2 (materials and operations).

But it is not correct in some cases: Activity_1 can occur in different dates (do not cross with activity_2). So, when they do not cross, activity_1 MUST have only  it's own materials and operations (does not include Activity_2).