Multiselect is important and available through embed scripts but those are merely for text data type. There are many scenarios, CRM for example, where user is entering sales activities for a company and they want to choose multiple contacts for that company. Since a contact has a unique PK there is no way to choose more than 1 value since the table that stores the "Contact_ID" only stores a integer. There are complicated workarounds using arrays and looped insert functions but not having access to the SQL Server to do triggers or stored procedures places a limitation and puts the burden on myself to learn Javascript to try and loop through an array and insert multiple integers into a separate table just for this feature.