People and Company contact associations within Uptics are based on Email Domain. For Example: if I have a company with the domain property uptics.io and import a contact [email protected], Spinell will be auto associated to the Company.
There is the ability inside the Contact Details Page (or Company Details Page) to make an association, but the auto-association drives strictly from the domain on the Contact Record matching the domain in the Company Record.
When you import a list of contacts, Company Records will be created automatically if they aren't already present using the domains from the contact records (unless there are emails like gmail.com, outlook.com, etc.)