Can I embed a spellcasting spot on a shield, such as a paladin or a cleric? [duplicate]

This question already has an answer here:

  • Can I make an arcane focus shield?

    3 answers

  • Can a spellcaster of various kinds have one thing to be two different approaches?

    3 answers

I want a multi-class cleric / wizard or paladin / wizard and I was wondering if I can use my sacred symbol as a spellcasting spot for my wizard spells and if not, I can embed my arcane focus on my shield and my sacred symbol. I plan to take the feat of warcaster and be an arcane cleric if that helps.