Weekend dates

We have chosen to not have weekends and holidays to be factored into the development of timelines and the respective dependencies. this works most of the time BUT for our digital and event boards - this does not work. There needs to be a way at the BOARD level to choose - no weekends/holidays or an open calendar. My understanding is that company wide we had to choose one or the other. Due to this MONDAY is useless for events or digital happenings that happen on a weekend or holiday since we cant even manually put in a weekend or holiday date.