tpe/24-7 relationships are difficult to define because the consensus on what is or isn't total is heavily debated and largely dependent on what the dominant factor prefers. as such, generalities exist that may not encompass all couples. one might engage this way from a D/s, M/s, or O/p perspective. some utilize these terms interchangeably, i do not. i see marked differences between the three as they apply to my relationships.
the variations of surrender may be partial, total (as defined by the dominant), or absolute. some pairings progress towards the state of enslavement, and choose to do this externally or internally. the latter is typically referred to as internal enslavement, and has its own features and methods employed to bring this about. in regard to residence, some couples live together or may reside apart for a variety of reasons. the term couple is used loosely and may include additional partners or polygamous families.
while the methods for creating the structure will vary from person to person. most are heavily dependent on the dominant's desires, goals, long term vision, character, experience, and the quality and willingness of his submissive/slave to embrace and manifest these things as instructed. it is always a work in progress. my personal leanings are towards Owner/property relationships where absolute servitude is expected and internal enslavement is the goal.
you can find a pretty good description here:
His will; my fate.