How long can they stay, can they change host/activity, can family accompany, and can the status be extended?
Unless otherwise specified, entry permits last at most one year, with provision for renewal. Status cannot be changed during the stay except in accordance with Title 50; changing status requires applying for a new permit and paying a fee. The missionary's spouse or unmarried child under 18 may be issued an entry permit for the duration of the missionary's permit, renewable with it. The official source does not state whether the host organisation can be changed.
See recorded sources
Limits of the record- The captures do not say whether the missionary may change host organisation.
- https://fsmlaw.org/fsm/code/title50/T50_Ch01_2014.html
Unless otherwise specified, all entry permits are limited to one year maximum period, with provision for renewal;
- https://fsmlaw.org/fsm/code/title50/T50_Ch01_2014.html
The immigration status of any noncitizen entering or residing in the Federated States of Micronesia under any other provision of this chapter may not be changed during his stay in the Federated States of Micronesia, except in accordance with the provisions of this title.
- https://fsmlaw.org/fsm/code/title50/T50_Ch01_2014.html
For a noncitizen to change status, he shall be required to apply for a permit reflecting his changed status and pay a fee, except that citizens and nationals of the United States of America, for the duration of the Compact of Free Association, and citizens and nationals of the Republic of the Marshall Islands or the Republic of Palau shall not be required to pay a fee to change immigration status.
- https://fsmlaw.org/fsm/code/title50/T50_Ch01_2014.html
A spouse or unmarried child under the age of 18 of any noncitizen principal listed in this section, except subsection (11) of this section, may be issued an entry permit for the duration of the principal’s entry permit and may be renewed upon renewal of the principal’s entry permit.