Here's how you use it:
"In lieu of" means "instead of" or "in place of".
Examples:
* "In lieu of flowers, the family requests donations to the charity." (Instead of flowers, the family wants donations.)
* "We will be holding a virtual meeting in lieu of an in-person one." (We will have a virtual meeting instead of an in-person one.)
* "He received a bonus in lieu of a raise." (He got a bonus instead of a raise.)
Remember: "In lieu of" is always followed by a noun or noun phrase.
Let me know if you'd like more examples or have any other questions.