Check that both persons are married, and have an entry in FamilySearch, see FamilySearch ⟶ Add Person
From ⟶ GEDCOM ⟶ Individuals
Right Click ⟶ Change Displayed Columns add the Spouses column
From ⟶ GEDCOM ⟶ Families
Right Click ⟶ Change Displayed Columns add the Husband & Wife column
View the match dialog
View the FamilySearch match dialog
Select , and reason text.
Notice how Grammarly can fix the spelling and grammar.
The couple are created in FamilySearch.
The FamilySearch ID for the couple now shows in the Family table.
Click on the link to view the FamilySearch couple
Click to view the couple in the FamilySearch portal
Once the FamilySearch couple is linked to the GEDCOM Family
can be used to transfer additional facts
See also FamilySearch Transfer ⟶ Match Families
which explains how GEDCOM Families are matched to FamilySearch couples