That is governed by the rules on maintaining permanent residence, not by the program's own material, and it depends on the individual pattern of absence and intent. Do not assume that paying a large sum buys flexibility about where you live. Put your intended travel pattern to counsel before the status begins and plan the year around the advice given.
Sketch a realistic year before you commit
Draw the twelve months you expect: business travel, time at a second home, family obligations, and any period you cannot be in the United States. Show that picture to counsel rather than asking an abstract question, because advice on absences depends on the pattern rather than a single trip. If the answer conflicts with how you intend to live, that is worth knowing before the fee is paid and the gift is made.
Draw the year before asking the question, and show it rather than describing it, because advice on absences turns on the pattern rather than on any single trip. Mark the periods abroad, the reason for each, and anything fixed such as a school term, a board calendar or a lease. Where the drawing conflicts with what maintaining the status requires, there are only three responses: change the pattern, change the plan, or accept a risk that has been named.
All three are manageable decisions; the unmanageable version is discovering the conflict after the payments have been made.