The file context on the default location can be used as template to for the new location. Most policy modules include man page documentation (generated using sepolicy manpages) explaining possible alternative file contexts with their access semantics.
File context database uses regualr expression syntax, which allows writing overlapping specifications. It is worthwhile to note that applied context is the last specification found [src].
To add a new entry to file context database:
After new context entry is added to the database, the context from database can be applied on your files using restorecon <files>. Running restorecon with -vn flags will show what file contexts would be changed without applying any changes.
New file context is specified in the arguments to chcon. When used with --reference= option, the security context from a reference file is copied to the target files.
using a specific context (default_t):
chcon -t default_t <target files> or using a reference: