You can follow the general steps given below to apply for a UK Dependent visa:
Step 1: Check if you meet the eligibility criteria as a dependent.
Step 2: Fill out the online application form on gov.uk.
Step 3: Pay the visa fee and Immigration Health Surcharge (IHS).
Step 4: Book and attend your biometric appointment.
Step 5: Upload all required supporting documents online.
Step 6: Wait for a decision, which usually takes 3 to 12 weeks.