diff --git a/cmd/neofs-adm/internal/modules/morph/initialize.go b/cmd/neofs-adm/internal/modules/morph/initialize.go
index 3431ecee..a2266ac2 100644
--- a/cmd/neofs-adm/internal/modules/morph/initialize.go
+++ b/cmd/neofs-adm/internal/modules/morph/initialize.go
@@ -7,6 +7,7 @@ import (
 	"path"
 	"time"
 
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/rpc/client"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
@@ -48,7 +49,11 @@ func initializeSideChainCmd(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	// TODO 2. Setup notary and alphabet nodes in designate contract.
+	cmd.Println("Stage 2: set notary and alphabet nodes in designate contract.")
+	if err := initCtx.setNotaryAndAlphabetNodes(); err != nil {
+		return err
+	}
+
 	// TODO 3. Deploy NNS contract with ID=0.
 	// TODO 4. Deploy NeoFS contracts.
 	// TODO 5. Setup NeoFS contracts addresses in NNS.
@@ -160,6 +165,21 @@ loop:
 	return nil
 }
 
+func (c *initializeContext) sendCommitteeTx(script []byte, sysFee int64) error {
+	tx, err := c.Client.CreateTxFromScript(script, c.CommitteeAcc, sysFee, 0, []client.SignerAccount{{
+		Signer: transaction.Signer{
+			Account: c.CommitteeAcc.Contract.ScriptHash(),
+			Scopes:  transaction.CalledByEntry,
+		},
+		Account: c.CommitteeAcc,
+	}})
+	if err != nil {
+		return fmt.Errorf("can't create tx: %w", err)
+	}
+
+	return c.multiSignAndSend(tx, committeeAccountName)
+}
+
 func getWalletAccount(w *wallet.Wallet, typ string) (*wallet.Account, error) {
 	for i := range w.Accounts {
 		if w.Accounts[i].Label == typ {
diff --git a/cmd/neofs-adm/internal/modules/morph/initialize_roles.go b/cmd/neofs-adm/internal/modules/morph/initialize_roles.go
new file mode 100644
index 00000000..dbb587cf
--- /dev/null
+++ b/cmd/neofs-adm/internal/modules/morph/initialize_roles.go
@@ -0,0 +1,40 @@
+package morph
+
+import (
+	"fmt"
+
+	"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
+	"github.com/nspcc-dev/neo-go/pkg/core/native/noderoles"
+	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
+)
+
+func (c *initializeContext) setNotaryAndAlphabetNodes() error {
+	designateHash, err := c.Client.GetNativeContractHash(nativenames.Designation)
+	if err != nil {
+		return fmt.Errorf("can't fetch %s hash: %w", nativenames.Designation, err)
+	}
+
+	var pubs []interface{}
+	for _, w := range c.Wallets {
+		acc, err := getWalletAccount(w, singleAccountName)
+		if err != nil {
+			return err
+		}
+
+		pubs = append(pubs, acc.PrivateKey().PublicKey().Bytes())
+	}
+
+	w := io.NewBufBinWriter()
+	emit.AppCall(w.BinWriter, designateHash, "designateAsRole",
+		callflag.States|callflag.AllowNotify, int64(noderoles.P2PNotary), pubs)
+	emit.AppCall(w.BinWriter, designateHash, "designateAsRole",
+		callflag.States|callflag.AllowNotify, int64(noderoles.NeoFSAlphabet), pubs)
+
+	if err := c.sendCommitteeTx(w.Bytes(), -1); err != nil {
+		return err
+	}
+
+	return c.awaitTx()
+}