Normally, a married couple is shown in a single dossier for practical reasons. In this case, select Mr. and Mrs. as the salutation. If the couple has the same last name, enter the common last name and both first names in the first name field:
In exceptional cases, the married couple can of course also be shown in separate dossiers. Then link the dossiers together, for example by creating a suitable relationship spouse1 - spouse2. However, this only makes sense if you do not write to the couple together: