To invest in Fixed-Income Securities with Citi UAE, one must first apply for an Investment Account by visiting their nearest Citi branch. After opening the account, prospective investors can access Citibank Online, choose 'eBrokerage' under the 'Investments' tab, select the desired account, and click 'Buy' to begin their investment journey. To start buying or selling Fixed Income Securities, investors must ensure their current/savings/checking account is funded. For additional support, investors can contact their Relationship Manager or call +971 4311 4000.