# Can I embed a spellcasting focus into a shield, like a paladin or cleric? [duplicate]

I want to multiclass either cleric/wizard or paladin/wizard and I was wondering whether i can use my holy symbol as a spellcasting focus for my wizard spells and if not, can I embed my arcane focus into my shield as well as my holy symbol. I plan to take the warcaster feat and be an arcane cleric if that helps.