date = {
    effect = {
        ...
    }
}

# Examples:
# Start iberian_struggle struggle in 714.1.1
# 714.1.1 = {
#     effect = {
#         if = {
#             limit = { has_dlc_feature = the_fate_of_iberia }
#             start_struggle = {
#                 struggle_type = iberian_struggle
#                 start_phase = struggle_iberia_phase_opportunity 
#             }
#         }
#     }
# }

# End iberian_struggle struggle in 716.1.1. If the struggle didn't start before then there is going to be an error (be sure to run an existence check)
# 716.1.1 = {
#     effect = {
#         if = {
#             limit = { has_dlc_feature = the_fate_of_iberia }
#             end_struggle = secure_iberian_foothold_decision_title
#         }
#     }
# }