Scenario contains a specific set of rules to determine, how search is going on.
Search time is based on size of the room. More characters are searching in one room, sooner they can conclude about search results.
Any researching character should make a skill check against Room DC to determine result.
Highest result is used. Other results, beating Room DC, are counted as giving researching character an assist.
Results lower than Room DC are not counted.
Usable skills are:
* Linguistics
* Knowledge(history)
* Craft(bookbinding)
* Profession(librarian)
Other skills might be used with corresponding penalty:
-2: Craft(caligraphy), Profession(scribe) - this skill is book related, but not directly helpful
-3: Appraise, Knowledge (other than history) - some crossreferences could be useful in locating books
-4: Pure ability check - in case you have any mentioned skills trained at all
-5: Spellcraft, Perception, Sence Motive - they are less related to research, but more on chance on detect something specific
Skills based on STR, DEX or CHA are unusable for researching.
Some rooms are specific and other research skills might be used.
As an example, if there is a room about heraldry - Knowledge (nobility) have no penalty; room about art - art-related Crafts or Profession (art critique) have no penalty; and so on.