It is only necessary to stay for a short time; fifteen minutes or so gives you enough time to express your sympathy. Your simple presence will mean a lot to the family. You do not need to stay for the entire visitation, but try not to leave during any prayers or services.
A formal visitation provides a time and place for friends to offer their expressions of sorrow and sympathy. This practice is most common among the Protestant and Catholic faiths. The obituary should tell you the visitation hours and when the family will be present.
When you speak to the family, don’t feel as though you must avoid talking about the person who has died. Talking can help the grieving process begin. Do not feel uncomfortable if you or the family member becomes emotional or begins to cry. Allowing the family to grieve is a natural healing process. However, if you find yourself becoming extremely upset, it would be kinder to excuse yourself so as not to increase the strain on the family.
Many times the family will be in a receiving line near the casket. Viewing the deceased is not mandatory. However, if offered by the family, it is customary to show your respects by viewing the deceased, and, if you desire, spending a few moments in silent prayer. If a kneeling bench is placed in front of the casket, you may kneel and say a prayer. If you do not wish to kneel, you may stand in front of the casket for a moment.